2. Phase II: Pilot campaign demonstration: In this phase, investigators will conduct a door to door campaign in the high risk community to provide fIPV using either WestPharma device or Star ID syringe or BCG needle syringe. In this campaign, any child less than 5 years of age, living in the study area and whose parents provide verbal consent will receive intradermal injection of fIPV using any of the three devices by the trained research assistants. This will be a one day campaign in coordination with provincial polio emergency operation center (EOC). About 300 children will receive fIPV using any of the three devices.